junk ring, 4 in bore for canrig top drive model 1275ac-681 (part number: dt13272) deflector, bonnet 4 inch next gen for canrig top drive model 1275ac-681 (part number: dt13123) el6731-0010 直通终端接头 螺纹卡套式:连接尺寸:m20*1.5(f)-12:;压力等级:pn6.3mpa;材质316 ...